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1,301 results for “Early Cretaceous”
Fig. 4 in Earliest Eutherian Ear Region: A Petrosal Referred to Prokennalestes from the Early Cretaceous of Mongolia
Fig. 4. Right ear regions in ventral view, with major arteries, veins, and nerves. A, The basicranium of the monotreme Ornithorhynchus anatinus, modified and redrawn from Wible and Hopson (1995: fig. 4B). B, The petrosal of the prototribosphenidan Vincelestes neuquenianus, modified and redrawn from Rougier et al. (1992: fig. 3C). C, The petrosal of the marsupial Didelphis virginiana, modified and redrawn from Wible and Hopson (1995: fig. 5A). D, The basicranium of the placental Solenodon paradoxus, modified and redrawn from McDowell (1958: fig. 7B). The opossum has an internal carotid artery (not shown), but it does not contact the petrosal, which also occurs in the platypus.
Fig. 9. Cearachelys placidoi, n in Cearachelys, a New Side-Necked Turtle (Pelomedusoides: Bothremydidae) from the Early Cretaceous of Brazil
Fig. 9. Cearachelys placidoi, n. gen. & sp., TUTg 1798, dorsal (left), ventral (right), and lateral
Fig. 6. Cearachelys placidoi, n in Cearachelys, a New Side-Necked Turtle (Pelomedusoides: Bothremydidae) from the Early Cretaceous of Brazil
Fig. 6. Cearachelys placidoi, n. gen. & sp., MPSC specimen, holotype, shell in ventral (upper) and dorsal (lower) views. (See fig. 7).
Figures 6-10 from: Caterino MS, Maddison DR (2018) An early and mysterious histerid inquiline from Cretaceous Burmese amber (Coleoptera, Histeridae). ZooKeys 733: 119-129. https://doi.org/10.3897/zookeys.733.23126
Figures 6-10 Drawings from holotype. 6 Frontal view 7 Prosternum and antennae 8 Prothoracic leg, anterior view 9 Mesothoracic leg, anterior view 10 Metathoracic leg, anterior view.
Figure 1 from: Caterino MS, Maddison DR (2018) An early and mysterious histerid inquiline from Cretaceous Burmese amber (Coleoptera, Histeridae). ZooKeys 733: 119-129. https://doi.org/10.3897/zookeys.733.23126
Figure 1 Photograph of original piece of amber (OSAC_0002900057) containing holotype before cutting and polishing.
FIGURE 2 in Two echinoid species from the early Aptian (Early Cretaceous) of the Kopet-Dagh Basin, NE Iran
FIGURE 2. Map of the study area.
FIGURE 4 in Two echinoid species from the early Aptian (Early Cretaceous) of the Kopet-Dagh Basin, NE Iran
FIGURE 4. Stratigraphy and lithology of the studied section.
Figure 6 in Washington State (USA) trigoniids (Bivalvia) from the conglomerate of Patterson Lake (Early Cretaceous)
Figure 6. Columbitrigonia condoni (Packard, 1921). All are silicone casts of external molds. A, B. UWBM 112552 from UWBM loc. 9486. Posterior end missing. A. Flank view of LV. B. Oblique view showing area and marginal carina. C. UWBM 112554 from UWBM loc. 9487. Flank view of RV. D. UWBM 112555 from UWBM loc. 9487. Flank view of LV showing commarginal lirae on the posterior terminus. Scale bars = 10 mm.
Figure 1. Locality Map for Burke Museum sites B-9486 and B-9487 in Washington State (USA) trigoniids (Bivalvia) from the conglomerate of Patterson Lake (Early Cretaceous)
Figure 1. Locality Map for Burke Museum sites B-9486 and B-9487 on Patterson Mountain, and B-9541 on Rendezvous Road. Sites indicated by red stars. Conglomerate of Patterson Lake (cPL) highlighted in green. Specific locality details can be obtained from the UWBM or the author.
Fig. 4 a in Latest Jurassic - Early Cretaceous Dasycladalean Algae (Chlorophyta) From The Morand Drilling At Montricher (Canton Of Vaud, Switzerland)
Fig. 4 a to n (scale bar: 500 µm): a random sections of laterals of Rajkaella bartheli, transition Pierre Châtel - Goldberg formations, Lower-Middle Berriasian, sample 320; b section of a lateral of Rajkaella bartheli, transition Pierre Châtel - Goldberg formations, Lower-Middle Berriasian, sample 320; c transverse section of a charophyte stalk, Charaxis sp., Goldberg Fm, Lower Berriasian, sample 324; d axial sections of charophyte stalks, Charaxis sp., Goldberg Fm, Lower Berriasian, sample 325; e transverse section of a charophyte stalk, Goldberg Fm, Lower Berriasian, sample 325; f axial section of a charophyte oogonium, Goldberg Fm, Lower Berriasian, sample 321; g tufts of secondary laterals of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 303; h tufts of secondary laterals of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 316; i section of a lateral of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 319; j tufts of secondary laterals of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 303; k section of a lateral of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 319; l deep tangential section of a verticil of Actinoporella sp. (note: the corona structure is visible), "Urgonien jaune", Upper Hauterivian, sample 114; m oblique section of a verticil of Actinoporella sp., Pierre Châtel Formation, Middle Berriasian, sample 319; n
Fig. 2 in Latest Jurassic - Early Cretaceous Dasycladalean Algae (Chlorophyta) From The Morand Drilling At Montricher (Canton Of Vaud, Switzerland)
Fig. 2 The occurrences of the Dasycladales, few other algae and foraminifers are plotted on the lithostratigraphic log of the Morand drilling (redrawn and modified from Wilhelm et al., 2003, p. 130). Caption: *: "Marnes d'Uttins", **: "Calcaires roux", ***: Chambotte Fm
Fig. 4 in Early Cretaceous multituberculate mammals from the Kuwajima Formation (Tetori Group), central Japan
Fig. 4. Eobatarid multituberculate mammal Hakusanobaatar matsuoi gen. et sp. nov., SBEI 1736, holotype; Lower Cretaceous Kuwajima Formation, Shiramine, Japan. A. Right lower jaw fragment with p3 and p4, labial view. B. Isolated right lower incisor; B1, labial view; B2, somewhat occlusal view. C. Isolated right M1; C1, occlusal view, right to anterior; C2, labial view.
Data from: Rates of morphological evolution are heterogeneous in Early Cretaceous birds
The Early Cretaceous is a critical interval in the early history of birds. Exceptional fossils indicate that important evolutionary novelties such as a pygostyle and a keeled sternum had already arisen in Early Cretaceous taxa, bridging much of the morphological gap between Archaeopteryx and crown birds. However, detailed features of basal bird evolution remain obscure because of both the small sample of fossil taxa previously considered and a lack of quantitative studies assessing rates of morphological evolution. Here we apply a recently available phylogenetic method and associated sensitivity tests to a large data matrix of morphological characters to quantify rates of morphological evolution in Early Cretaceous birds. Our results reveal that although rates were highly heterogeneous between different Early Cretaceous avian lineages, consistent patterns of significantly high or low rates were harder to pinpoint. Nevertheless, evidence for accelerated evolutionary rates is strongest at the point when Ornithuromorpha (the clade comprises all extant birds and descendants from their most recent common ancestors) split from Enantiornithes (a diverse clade that went extinct at the end-Cretaceous), consistent with the hypothesis that this key split opened up new niches and ultimately led to greater diversity for these two dominant clades of Mesozoic birds.
Figure 3 in A new basal ornithuromorph bird (Aves: Ornithothoraces) from the Early Cretaceous of China with implication for morphology of early Ornithuromorpha
Figure 3. Photograph and interpretative line drawing of the pectoral girdle and sternum of the holotype of Bellulia rectusunguis gen. et sp. nov., IVPP V17970. Abbreviations: clp, craniolateral process of the sternum; lt, lateral trabecula; po, procoracoid process; sf, supracoracoidal never foramen; pa, parapophysis; zp, zyphoid process of the sternum; other abbreviations follow in Figure 2. The arrow indicates the ventral groove extending to the supracoracoidal nerve foramen. Scale bar, 10 mm.
Fig. 1. PSSMAE 140 in Gobiconodonts from the Early Cretaceous of Oshih (Ashile), Mongolia
Fig. 1. PSSMAE 140, Holotype of Gobiconodon hopsoni, sp. nov. Fragmentary right maxilla in (top) labial and (bottom) occlusal views. Abbreviations: Ant. Inf., anterior infraorbital foramen; Art., artifact; Buc. Cr., buccinator crest. M3, M4, roots or alveoli for the third and fourth molariform; Orb, orbital margin; Post. Inf., posterior infraorbital foramen.
Fig. 6 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 6. Photograph and interpretive drawing of NIGP-130723. This slab, the counterpart of which is shown in figure 7, was used as the holotype of Liaxiornis delicatus by Hou and Chen (1999). Abbreviations: pyg, pygostyle; other abbreviations as in figures 3 and 5.
Text-fig. 12. Silutanispermum kvacekiorum gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, orthoslices). a) Longitudinal orthoslice (yz1170) through the median plane of the seed (S170238) in the micropylar region showing exotestal cells lining the micropylar slit (mi) and hilum (hi); note the well-preserved mesotestal cells (me). b) Longitudinal orthoslice (xz0805) of seed perpendicular to the median plane through the micropylar region showing the transverse micropylar slit (mi) lined by radiating exotestal cells; note abundant mesotestal cells (me). c) Transverse orthoslice (xy0768) through seed below hilum and micropyle showing exotesta (ex) and mesotesta (me) that is strongly developed along the raphe (ra) (S174352). d) Transverse orthoslice (xy2113) through middle of the seed showing well-preserved cellular nutritive tissue with empty cells; note that the raphe (ra) is enclosed in mesotestal tissue (S174352). e) Longitudinal orthoslice (yz0970) through seed coat showing exotesta (ex) of tall palisade-shaped cells and thick mesotesta (me) of low cells (S174352). Scale bars = 500 µm (a, c, d); 250 µm (b); 125 µm (e). in Extinct Taxa Of Exotestal Seeds Close To Austrobaileyales And Nymphaeales From The Early Cretaceous Of Portugal
Text-fig. 12. Silutanispermum kvacekiorum gen. et sp. nov. seeds from the Early Cretaceous Famalicão locality (sample 025), Portugal; Synchrotron radiation X-ray tomographic microscopy (SRXTM, orthoslices). a) Longitudinal orthoslice (yz1170) through the median plane of the seed (S170238) in the micropylar region showing exotestal cells lining the micropylar slit (mi) and hilum (hi); note the well-preserved mesotestal cells (me). b) Longitudinal orthoslice (xz0805) of seed perpendicular to the median plane through the micropylar region showing the transverse micropylar slit (mi) lined by radiating exotestal cells; note abundant mesotestal cells (me). c) Transverse orthoslice (xy0768) through seed below hilum and micropyle showing exotesta (ex) and mesotesta (me) that is strongly developed along the raphe (ra) (S174352). d) Transverse orthoslice (xy2113) through middle of the seed showing well-preserved cellular nutritive tissue with empty cells; note that the raphe (ra) is enclosed in mesotestal tissue (S174352). e) Longitudinal orthoslice (yz0970) through seed coat showing exotesta (ex) of tall palisade-shaped cells and thick mesotesta (me) of low cells (S174352). Scale bars = 500 µm (a, c, d); 250 µm (b); 125 µm (e).
Figure 9 in Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian-early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics
Figure 9. Andesaurus delgadoi. Photograph of right humerus in anterior view. Scale bar: 200 mm.
Fig. 5 in Crab in amber reveals an early colonization of nonmarine environments during the Cretaceous
Fig. 5. Phylogeneticrelationshipsof Cretapsaraathanata Luque,gen. etsp. nov. inthecrabtreeoflife. Bayesianmajority-ruleconsensustopologyof thepost–burn-in sample of trees for key fossiland extant eubrachyuran families, includingprobability supportvalues indicated at branches. Branches with posterior probability support <75% are collapsed. Thick solid lines represent the ages of the known first and last occurrences of the studied families. Dotted lines and daggers (†) indicate extinct taxa; solid lines indicate living taxa. Photos: Heikeopsis japonica (A) by T.-Y. Chan; Telamonocarcinus gambalatus (B), M. pasinii (E), and E. elegius (H) by À. Ossó; Archaeochiapasa mardoqueoi (C) by F. Vega; Componocancer robertsi (D) by R. Feldmann and C. Schweitzer; Dilocarcinus septemdentatus (G) and Melothelphusa dardanelosensis (M) by Senckenberg Museum, S. Tränkner,courtesyof C. Magalhães [(M) after (80)]; Cretapsaraathanata Luque gen. etsp.nov.(F) herein;C.maenas (I), C.sapidus (K), Geothelphusaolea (O), Sayamia melanodactylus (P), Geosesarma dennerle (R), and C.guanhumi (S) by O. Radosta; G. trispinosus (J) by C. Noever (CCBY 4.0, https://commons.wikimedia.org/w/ index.php?curid=63236719); Dinocarcinusvelauciensis (L) by N. Robin; Potamonauteskunduno (N) by P. Crabb (CCBY 3.0,https://commons.wikimedia.org/w/index.php?curid=29254322); G. cruentata (Q) by A. Anker; and Leptuca oerdesti (T) by J.L. Figure by J.L.
Figure 8 from: Engel M, Perez de la Fuente R, Penalver E, Delclos X (2012) Snakefly diversity in Early Cretaceous amber from Spain (Neuropterida, Raphidioptera). ZooKeys 204: 1-40. https://doi.org/10.3897/zookeys.204.2740
Figure 8 - Drawings of Amarantoraphidia ventolina gen. et sp. n., holotype CES 364.1. A lateral habitus B head, magnified. Scale bars: A = 1 mm; B = 0.5 mm.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.